Heffby millholland



(No Model.)

H. MILLHO'LLAND.' DBPLEGTING PLATE POR LoooMoTlVBs.

Patented July 31, 1883.

Figi.

INVENTOR MM WITNESSES:

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l UNITEDl STATES PATENT OEEICE.

HENRY MILLHOLLAND, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO ROBERT V. LESLEY, OF SAME PMLAOE.

DEFLECTING-PLATE FOR LOCOIVIOTIVES.

SPECIFICATION-forming' part 0f Letters Patent No. 282,104, dated July 3l, 1883.

Application filed May 28, 1888. (No model.) i

To all whom it may concern,.-

Be it known that I, HENRY MILLHOLLAND, of Philadelphia, Pennsylvania, have invented certain new and useful improvements in mechanical devices for regulating and distributing the draft through the tubes of locomotiveengine boilers, of which the following is a specification.

My invention belongs to that class of devices Io known as deflecting-plates; and it consists of a dividing plate or partition in thesniokeboX, extending from the crown of the saine in fronty of the induction-pipes by any convenient curved or straight line asuffieient distance below the upper line of tubes or beyond the eX- haust-pipe, to produce the effect which is the obj ect of my invention-that is, to regulate and distribute the force of the blast by preventing an undue direct inuenee of the same 2o on the upper rows of flues, and incidentally providing a heat-j acket for the induction-pipes and preserving the steam in the same'at a temperature above the point of condensation.

In the drawings which form part hereof,

2 5 Figure 1 represents a longitudinal vertical central section of the waist and smoke boX of a locomotive tubular boiler containing one form of my invention applied in a half-extension or short smoke-box, and Fig. Zrepresentsasimi- 3o lar section of asimilar boiler with myinvention applied within a long or full-extension smokebox.

In both of the views, I-I is the stack; C,thc,

exhaust-pipe and nozzle; D, the induction- 3 5 pipe; G, theupper part of the defiecting-plate; G, the lower part, when projected downward below the upper rows of boiler-tubes, as shown in Fig. l, G, the extension of the deiiectingplate G by any suitable line to a point beyond 4o the exhaust-pipe, which then passes through it, as shown in Fig. 2. B is a screen or netting; J, the lower compartment of the smokeboX. J/isthe upper compartment of the same, and S an accumulation of sparks or cinders.

It will be noticed that the delecting-plate G, as shown in both views, starts from any point on the crown of the smoke-box back of the stack-opening, and, extending from side to side of the same, projects downwardly by any 5o convenient plane in front of the inductionpipes to a point at or near the upper end of the exhaust pipe or nozzle. From this point (if the engine be adapted for burning hard or anthracite coal and it is desirable to have a short or half-extension smoke-box for that or any` other reason) the plate may be 'projected downward by any convenient line or plane at a sufficient distance to control the blast and distribute its effects more evenly throughout all the tubes. This form of deflector is shown 6o in Fig. l, and it is especially suited to a halfextension smoke-box where screen-space becomes important, as the screen or netting may be carried from side to side and by any convenient line orplane from the forward end of 6 5 Vthe smoke-box to the outward surface of the deilector back ofthe exhaust-pip e,whi ch passes through the screen or netting. XVhen, however, for any reason, a full extension smokebox is desirable, (as where the accumulation 7o of cinders is large, due to the character of fuel burned,) then the deiieeting-plate may be carried forward by any suitable line or plane (or as shown by G in Fig. 2) a sufficient distance beyondthe exhaust-pipe, which passes through 7 5 it, to produce "a regulating effect upon the blast substantially similartothat produced by the device when deiiected downwardly, as shown in Fig. l. The plate G may be extended by a screen or netting, VB, by any convenient line 'or plane to the forward end of the smoke-box. I prefer in practice to arrange, the nettings or screens substantially as indicated in the several views. The plate maybe attached to the crown and sides ofthe smokebox by angle-irons or strips, or by bending its edges, or any other suitable method of fastening. Vhere itis desirable to regulate the set of the extension of the deflecting-plate, the plate may be doubled near its extremity and the addition made adjustable; but I prefer to ascertain by experiment the proper length of plate for a given engine or class of engines, and use a single plate of the proper dimensions.

I ani aware that other forms of deflectingplates have been used, but my deflecting-plate projected from the crown of the smoke-box is cheaper in construction and more efficient in action, gives greater diseharge-spacefor the tubes and yet distributes the draft, and, in ad- IOO dition thereto, forms a heat-jacket for the induction-pipes, insuring a steady supply of dry steam through them when the engine is running, and affording a protection from condensation when the engine is at rest. It presents the further advantage that no small corners or crevices are found in the line of draft to prevent the free ejection of cinders from the tubes into the cinder-receptacle. y

Having described iny invention in the foregoing specication, what I claim as that invention isl. In the smoke-box of a locomotive-engine, a deilccting-plate extending from side to side of the same and projected from a line on the crown ofthe smoke-box back ofthe stack-op ening downwardly by any convenient line or plane in front of the induction-pipes a sufiicient distance below the upper rows of boiler tubes, substantially as described, and for the purpose specified.

'2. In the smoke-box of a locomotive-engine, a 'deiiectingplate extending from side to side within the same and projected from a line 011 the crown of the smoke-box back ofthe stackopcning downwardly by any convenient line or plane in front of the induction-pipes to a point near the top of the exhaust-pipes, and thence extended outwardly by any suitable line or plane a sufficient distance beyond the exhaust-pipe, which passes through it, substantially as described, and for the purpose speciiied.

3. In the smoke-box of a locomotive-engine, the combination of a deilecting-platc extending from side to side within the same and projected from a line on the crown of the s1nokebox back of thestack-opening downwardly by any convenient line or plane in front of the in duction-pipes a sufficient distance below the upper rows of boiler-tubes, with a screen or netting, through which the exhaust-steam pipe passes, extending from thesa-id deflecting-plate by any suitable line or planeV to the forward part of the smoke-box, which is by the plate andscreen or netting divided into an upper and lower compartment, substantially as deiexhaust-pipe, and thence extending outwardly by any suitable line or plane a sufficient distance beyond the exhaust-pipe, which passes through it, with a screen or netting extending from the same by any suitable line or plane to the forward end of the smoke-box, which is by the plate and screen or netting divided into upper and lower compartments, substantially as described, and for the purpose specified.

5. A deiecting-plate projected within the smoke-box of a locomotive-engine from the crown of the same downwardly or downwardly and forwardly, substantially as described, and for the purpose speciiied.

In testimony whereof I have hereunto signed my name this 23d day of May, A. D. 1883.

HENRY MILLIIOLLAND.

In presence of- WVM. H. Annrcxs, XVM. B. Enwxnns. 

